Gorilla Gadgets 3500mAh Extended Battery

Don't hate im new to this forum, Id rather lurk and read then post and make a fool of myself, but this needed sharing.

So I haven't seen any reviews of this battery yet for the d2g so figured I would share. I have taken this battery though a few cycles and Im pretty impressed with it, I really like the added weight and depth to the phone as in my opinion the d2g naked felt very slippery. So far Im getting about 35hours out of light day of use. And about 17 hours out of a heavy day. i bought it for 25 bucks off gorilla gadgets.com, the back plates come in black soft touch, or metallic blue for people who own blue d2g, my woman got the blue one I got the white, the back plate on hers matches the color on the phone perfectly, while on mine the black backplate matches the front facing and gives it a ying/yang thing I kinda like it.

I work for Red Bull as a Merchandiser so Im constantly on the road listening to mp3's though my stereo and making phone calls to vendors & account managers, and texting friends throughout the work day. Granted not everyone needs they're phone for 17 hours of heavy use out of the day, I surely don't. But the standard battery wasn't cutting it, I was maybe seeing 7-8 hours of heavy use which for me wasn't cutting it.

I do not run any battery saving apps or task killers, the only apps I have related to that are SetCPU set at 600mhz with screen off and a little change in advanced settings. Im also running Battery Indicator Pro and Battery Left Pro, just so I could watch how the battery acted for the first few days.

anyway heres some screen shots taken after 3 hours of heavy use(playing nova for 30 min, listening to music, transferring files over wifi & im sitting at 83% according to battery left pro, fully calibrated)

I don't understand. I have the extended battery from Verizon (I believe it's 1800mAh), and I got 15+ hours with heavy use, 36+ hours with light use. If I had a battery with 3500mAh I'd hope to get at least 24+ hours with heavy use.